Gymnasium parallel bars.



P. S. MEDART.

GYMNASIUM PARALLEL BARS.

APYLIGATION FILED MAY 19, 1914.

1,1 1 1,263, Patented Sept. 22, 19m

2 SHEETS-SHEET l.

YHE NORRIS Ptn A (0 :n llrm) \VASHINGI'UN. n r

P. S. MEDART. GYMNASIUM PARALLEL BARS.

APPLICATION I'ILED MAY 19, 1914.

Patented Sept. 22, 1914.-

2 SHEETS-SHEET 2.

1 I 1 L [/zverzfdfl W 5 CO1, PHOTO-LITHQ. WASHINGTON D C ORRIS PETER l sures-mien QF IQ jriinirr ivrnnne'i or fse p som f nssdmigse ame Torment/ranger MANUFAC- 'rui rne co vrrany, ors'r, Louis, virssounr, A conronnrron on ivrrssounr. a

i Be it knownthatI', PHILIP Mnnhn'rya i citizen of the United Stateshof America,

and a resident of St. Louis; ih-Fthe State of ingym'nasiums fand has for its obj ect to pro vide a simple, and efli'clent structural formation of the base or bed plateof :the pa rallel apparatus.

bars, wherein said baseisformed indetach= able and portable" sections formedffor jrea d y and substantial: 1 1 assemblage with'out x any protruding portions *whichwould catch and trip the feet of a person exercising upon the Another object is to provide a durable and efficient mechanism for efiectin'g a rapid and substantial; adjustment of the parallel rails I of'the-apparatus to and from each other to suit theconvenience of a'partyusing the apparatus, as to breadth, etc.', all as will here inafterfmore'fullyappear; a

In the accompanying drawings :Figure 1,'is a side elevation illustratingthe general J Referring to the drawlngs,

arrangement of the present invention in; a. gymnasium parallel bars.;:

of an individual post adjustingmeans; Fig.

.3, is an end elevation of-- -theparallel' bars. Fig. l, isa detail longitudinal section on line m-w, Figsr3 land 5, of the connection between an;,individual post ,and;thefl base plate of theapparatus, and the intermediate adjustingjmeans. 551is a detail horiZon'-. tal section of the same on line wL mQ'Fig. Fig. 6, is a detail. longitudinalsectionillus trating the connections between one of the end sections of the base plate and an intermediate/section of the same; Fig. 7 is a detail end elevation {an intermediate o gmember aforesaid.

Similar reference numerals indicate like parts 1n the several v1ews.

1 represents the supporting basejplateof the apparatus "formed as'usual'byjapair of=counterpart end I sections and a lpair ofintermediate sections" or connecting rails 2, which sections, in the present improvement, are detachably connected together by the following;means:'-

3 designates tubular pins: or tenons, preferably of a circular form in cross section,

"Spe'cification ofiL'etters Patent.

V Fig. 2, is. adetail elevation of the manually actuated portion.

e iyrivhsrum'rAR LLELr Rs;

formed on the vertical end facesof theintermediate sections or rails 2, -and extending longitudinally therefrom. for engagement in correspondingly formedcav1t1es or recesses formed in the verticalend :faces of longitudinal extensions 1' of the aforesaid end sections'of thebase plate 1. 3 ,v 14': designates locking pins or keyspas'sing transversely through registering orifices formed inthe aforesaid tenons 3 and in the walls of the receiving cavities therefor, and adapted to lock the aforesaid *baseplate sections together in a firm and substantial manner. The tops of said locking pins 4, LWlfiQIliIl place-are'fiush with the top surface of the longitudinal extensions 1 aforesaid, so as to avoid any protrusions on which the feet of the partyusing the-apparatus could catch-and tripn v a n vThe base'plate sections "above described areqpreferably" of the hollow open-bottom form; with 'a viewto provide the required degree of strength and 'stifl'ness, with a minimum amount of material, and in the ease of the counterpart end sections, toprovide containing 'cavities fornthe casters 5 and their operating mechanisms 6, usually provided in connectionwwith portable parallelbars. i s

l .77 a designates fixed fulcrum standards or uprights arranged 1 in tspaced relation and =carriedilby the counterpart rend sections of the base 1, near the outer ends of said sect io1 1s, as shown. In the present improvement said standards;-v or uprights Z are formed with pivot orifices near'their lower '8 at their upper endsfor engagement with 2 Patented Sept.f22 19-14:. gf Appl-icjation filed. May 19,1914; ,seriain 339,531. a i I "ends, and withforkedformations "or yokes 1 the crank pins of the adjusting mechanisms hereinafter described.

9 designates a-series of hollow columns, 1n l the interior of which the aforesaid fixed fulcrum uprights? are housed. The columns lower ends adapted to register with the pivot orifices of the uprights 7 and iointly'receive the pivot pins 10, by which said parts'are pivotally connected together, ;While at a to be describedq 11 designates a; pair of circular ting the aforesaid transversely arranged 9" areformed with pivot orifices near their lid circular orifices of each hollow column 9, and are adapted to recelve a turnlng ad ustment in said orifices by means of a handle: or crank'l2, carried by one of the heads."

The heads 11 have a separated relation as shown,' and are connected together by. an inturning: ofIthe circular heads 11 and their eccentric Wrist pins 13, a pivotal adjustment ofa column9'in one lateral direction or th other will. be efiected. r l is a headed clamping screWingin-toj a column 9 adjacent to the marginof a circuvention, what I claim as new: andixdesiretto' lar' head. ll-aforesaid, and adapted to clamp saidf'head, at the'required point of adjustment.

portions of the hollow columns '9, and secured at any 1 required vertical adjustment by any usualiand suitable means.

116. are: the pair of parallel railssecured to the upper ends of the aforesaid. v

j Having, thus 1 fully {described 1 my said in-' secure :by Letters Patent, is

v 1. A base plate for parallel bars cornprising a' pair .ofendsections each nprovided with :'a pair of longitudinal extensions the vertical faces :ofrwhi'cli are 2 provided with longltudrnalvrecesses, :a. pair ,of .-1ntermed1ate long tmdinal IEtllS onsectwnsf'the vertical facesof which are: formed. with longitudinal tubular pinsadapted to'engage the aforesaid recesses, and transverse keys passing through i the :parts to lock the sections...in .assem'bled 'relation, substantially :as set forth a 2. :Inan. exercising apparatus of-the type described,-thacombination of: a base plate 15 are tubularpostssliding in the upper tubular 1 posts J5,

disposed a distance abov'esaidfpivot connections fori imparting a pivotal adjustment to the "tubular columns, in relation to the uprights,,substantially as set forth r t 3. In an exercising apparatus f the type describeddthe combination of a base plate having a plurality of spaced uprights, tubular columns housing saidvuprights and piv otecl thereto at their lower ends, and: means tions for impartinga pivotal adjustment to haying a pluralityofsp aceduprights, tubuv .lar columns housing said uprights and pivoted thereto at their lower ends andmeans disposed. a distance above said. pivot connec the tubular; columns a in relation, to; the avup'fl 1 rights; the same comprising a a rotary 'mem-.;

ber mounted transversely: in each column and havlng an eccentrlciwrlstfpm, :arrd1a yoke formationatthe upper endcof each up r-ightxin operative engagement "with the Wristfpin, substantially asset fort h.

s LizIn an exercising apparatus of: the type described, the-co1nbination of a base plate having a-pl-ural'ity of spaced uprights, Vtubu lari colunans housing-said upr ghts and pivoted l-thiereto at their: lower. ends, and m n disposed aj ,distance'mboVe saidg pivot con: nections for imparting apivota-l adjustment tothe tubular columns relation to.:t11e uprights, the sameqcomprising pairs :OfiillQBfdS -i.ournale'd transversely in 1 said columns; and having operating. handles and -eccentric wrist pins, the. uprights aforesaidbeingprovided at their upperends withiyokeformae tions engaging the-wrist pinszatoresaidasub .stantially; asset forth. v 1

' wsignedriat St. Louis, this; 15th I Witnesses:

topics ofthis patent may-be-obtained for 'five cents each; byadc' ressing 'the domm-i ssi dner"of ratents, 5 "washingtomi-n-fcz Y a 

